The text from the system dynamics principle aspect,build up rising the mathematics model that the regional tourism development of Peking-Tianjin-Hebei.And use the Simulink of MATLAB sets up the homologous calculator to imitate the true model,getting the emulation result that regional tourism development of Peking-Tianjin-Hebei,which got the imitate the result to delineated the future development condition.Through the analysis to imitate also has provided the practical and feasible scientific basis for the Peking-Tianjin-Hebei region tourism's development.